Blue Print Specifications Part 1

BLUE PRINT SPECIFICATIONS: Part 1

MAIN BEARING BORE:

SMALL JOURNAL:

MEDIUM JOURNAL:

LARGE JOURNAL:

2.4906 - 2.4915

2.6406 - 2.6415

2.8406 - 2.8415

MAIN BEARING CLEARANCE:

SMALL JOURNAL:

No. 1 0.0008 - 0.0080

No. 2-4 0.0018 - 0.0020

No. 5 0.0010 - 0.0036

LARGE JOURNAL:

No. 1-4 0.0013 - 0.0025

No. 5 0.0023 - 0.0033

MAIN BEARING SIDE CLEARANCE:

MINIMUM:

PREFERRED:

0.0020 - 0.0030

0.0050 - 0.0070

ROD BEARING CLEARANCE:

SMALL JOURNAL:

LARGE JOURNAL:

0.0007 - 0.0028

0.0013 - 0.0035

ROD BEARING SIDE CLEARANCE:

SIDE CLEARANCE:

MIN. PER PAIR RODS:

0.0020 - 0.0250

0.0100 - 0.0200

CRANKSHAFT END CLEARANCE:

THRUST CLEARANCE:

0.003 - 0.007

PISTON CLEARANCE:

CHEVY CAST:

ROAD USE:

STREET / STRIP:

RACING:

0.0015 - 0.0025

0.0025 - 0.0030

0.0030 - 0.0040

CHEVY FORGED:

ROAD USE:

STREET / STRIP:

RACING:

0.0040 - 0.0050

0.0050 - 0.0060

0.0055 - 0.0065

AFTERMARKET:

Follow manufactures recommendations.

NOTE: Measured at centerline of wristpin hole, perpendicular to pin. Finish bores with No. 500 grit stone.

PISTON GAS PORT:

0.045 - 0.056 Dia.. (Hot Rod)

0.025 - 0.030 Dia.. (Car Craft)

WRIST-PIN CLEARANCE:

PISTON:

ROD:

END PLAY:

0.0006 - 0.0008

0.0008 - 0.0010 (Floating pin)

0 - 0.0050

MAIN BEARING BORE:
SMALL JOURNAL: MEDIUM JOURNAL: LARGE JOURNAL:	2.4906 - 2.4915 2.6406 - 2.6415 2.8406 - 2.8415
MAIN BEARING CLEARANCE:
SMALL JOURNAL:	No. 1 0.0008 - 0.0080 No. 2-4 0.0018 - 0.0020 No. 5 0.0010 - 0.0036
LARGE JOURNAL:	No. 1-4 0.0013 - 0.0025 No. 5 0.0023 - 0.0033
MAIN BEARING SIDE CLEARANCE:
MINIMUM: PREFERRED:	0.0020 - 0.0030 0.0050 - 0.0070
ROD BEARING CLEARANCE:
SMALL JOURNAL: LARGE JOURNAL:	0.0007 - 0.0028 0.0013 - 0.0035
ROD BEARING SIDE CLEARANCE:
SIDE CLEARANCE: MIN. PER PAIR RODS:	0.0020 - 0.0250 0.0100 - 0.0200
CRANKSHAFT END CLEARANCE:
THRUST CLEARANCE:	0.003 - 0.007
PISTON CLEARANCE:
CHEVY CAST:
	ROAD USE: STREET / STRIP: RACING:	0.0015 - 0.0025 0.0025 - 0.0030 0.0030 - 0.0040
CHEVY FORGED:
	ROAD USE: STREET / STRIP: RACING:	0.0040 - 0.0050 0.0050 - 0.0060 0.0055 - 0.0065
AFTERMARKET:
	Follow manufactures recommendations.
	NOTE: Measured at centerline of wristpin hole, perpendicular to pin. Finish bores with No. 500 grit stone.
PISTON GAS PORT:
	0.045 - 0.056 Dia.. (Hot Rod) 0.025 - 0.030 Dia.. (Car Craft)
WRIST-PIN CLEARANCE:
PISTON: ROD: END PLAY:	0.0006 - 0.0008 0.0008 - 0.0010 (Floating pin) 0 - 0.0050